Abstract: A solar powered device comprising a solar radiation collection portion, wherein the solar radiation collection portion includes: a solar panel to collect solar radiation, a concentrator surrounding the solar panel to concentrate the solar radiation, and a charge controller coupled to the solar panel, a base portion, a plurality of legs, and a connection portion operably connecting the solar radiation collection portion to the base portion, the connection portion including a connection member having a first end and a second end is provided. Furthermore, an associated method is also provided.

Abstract: A PCS performs a control of increasing an output of a solar cell to exceed the suppression power threshold, when there is a period, where the output of the solar cell falls below a suppression power threshold, in an accumulation period included in a suppression period in which the output of the solar cell is suppressed.

Abstract: A movable solar power apparatus may comprise at least a solar panel set electrically connected to a maximum power point tracking system (MPPT). A lithium battery set is electrically connected to a battery management system (BMS) which is adapted to monitor and protect the lithium battery set, and the BMS is electrically connected to the MPPT to enable power generated by the solar panel set to directly charge the lithium battery set. A low potential wake-up circuit has a double-contact relay and a single-contact relay, and the double-contact relay comprises a main contact, a first contact, and a second contact. The main contact is switchably electrically connected to the first contact or the second contact, and the main contact is electrically connected to the BMS while the first contact is electrically connected to the master control circuit, and the MPPT is electrically connected to the BMS under normal condition.

Abstract: A transformer less battery charger system. In one embodiment, the battery charger system includes input terminals for receiving an AC voltage, output terminals for receiving terminals of a rechargeable battery pack, and a non-isolated DC-DC converter coupled between the input terminals and the output terminals. A device is also coupled somewhere between the input terminals and the output terminals. The device is configured to selectively and indirectly couple the input terminals to the output terminals. More particularly, the device indirectly couples the input terminals to the output terminals when the rechargeable battery pack terminals are received by the output terminals, and the device indirectly decouples the input terminals from the output terminals when the rechargeable battery pack terminals are separated from the output terminals.

Abstract: Systems and methods are described herein that may be used to form a heliostat. Various reflective surfaces and support structures are described that permit lightweight construction of configurable heliostats.

Abstract: According to an embodiment of the present invention, deterioration of a non-aqueous electrolyte power storage element is detected based on a first increase rate and a second increase rate, the first increase rate being an increase rate of a direct current resistance value obtained by measuring the non-aqueous electrolyte power storage element over a first time period, the second increase rate being an increase rate of a direct current resistance value obtained by measuring the non-aqueous electrolyte power storage element over a second time period that is longer than the first time period.

Abstract: The invention relates to a method of determining water accumulation in and or removal from a fuel cell, the method comprising circulating fuel gas in the anode side of the fuel cell for producing electric energy in a fuel cell process, providing at least two purge pulses from the fuel circulation, analyzing the composition and/or volume of purged gas of said at least two gas purge pulses for determining the amount of water accumulation in and/or removal from the fuel cell.

Abstract: The present disclosure provides an alternatingly-switched parallel circuit, an integrated power module and an integrated power package. The alternatingly-switched parallel circuit includes a first bridge arm and a second bridge arm at least partly formed in a chip containing a plurality of first cell groups and a plurality of second cell groups The plurality of first cell groups are configured to form the first upper bridge-arm switch and the plurality of second cell groups are configured to form the second upper bridge-arm switch, or the plurality of first cell groups are configured to form the first lower bridge-arm switch and the plurality of second cell groups are configured to form the second lower bridge-arm switch. The plurality of first cell groups and the plurality of second cell groups are switched on and off alternatingly.

Abstract: A contactless charging system includes a target vehicle and a charging station. The charging station includes a power transmission device, at least one parking space, a restriction device, and a management device. The management device is configured to control the restriction device to be a second state in which the target vehicle is permitted to enter the charging station and the parking space when the target vehicle is the contactless charged vehicle, and to be a first state in which the target vehicle is restricted to enter the charging station or the parking space when the target vehicle is not the contactless charged vehicle.

Abstract: A bus architecture for supplying power to a datacenter. A first DC bus includes a first DC bus conductor, a first power source and a first diode having a cathode connected to the first DC bus conductor. The first DC bus includes a first converter connected to the first power source and to an anode of the first diode. Power output by the first power source via the first converter is supplied at a first voltage level. The first DC bus includes a first plurality of loads and a first plurality of DC/DC converters connecting the first plurality of loads to the first DC bus conductor, respectively. The first DC bus includes a second diode having a cathode connected to the first DC bus conductors. A first uninterruptable power supply is connected to an anode of the second diode and operates at a second voltage level.

Abstract: Provided herein are copolymer electrolytes and electrocatalyst platforms, including brush block copolymers, triblock brush copolymers and pentablock brush copolymers. The copolymers described have beneficial chemical, physical and electrical properties including high ionic conductivity and mechanical strength. In embodiments, for example, the provided copolymer electrolytes and electrocatalyst platforms are doped with lithium salts or mixed with ionic liquids to form ion gels. In some embodiments, the copolymers provided herein self-assemble into physically cross-linked polymer networks with additional useful properties. The provided copolymers have low dispersity in the polymer side chains and do not require post-polymerization modifications.

Abstract: A device comprises a platform constructed and arranged to be mounted to one or more solar array modules and one or more solar irradiance sensors on the platform configured to receive incident solar energy, the one or more solar irradiance sensors oriented on the platform so that the received incident solar energy is comparable to that received by the solar array modules, the one or more solar irradiance sensors providing solar irradiance signals in response to the incident solar energy. A processor is on the platform, the processor configured to receive the solar irradiance signals and, in response, generating a performance reference metric based on the solar irradiance signals, the performance reference metric related to the expected performance of the one or more solar array modules to which the platform is mounted. A transmitter is on the platform, the transmitter configured to periodically transmit the performance reference metric to a receiver.

Abstract: The present invention is provided with: a power converter (14) connected to a power plant (12) for generating power from renewable energy and having a proportional-control type power adjusting function that outputs the power generated by the power plant (12) after converting a direct current into an alternating current, and that adjusts the outputted power proportionally to a manipulation level; an instantaneous power detector (3) that detects an instantaneous power of the power outputted from the power converter (14); a comparison unit (4) that compares the instantaneous power detected by the instantaneous power detector (3) and a target value set by a generated power setting unit (5) and outputs a comparison signal; a control unit (6) that adjusts the comparison signal outputted by the comparison unit (4); and an output signal unit (7) that outputs the comparison signal adjusted by the control unit (6) to the power converter (14) as the manipulation level.

Abstract: The invention relates to a solar power system and method of monitoring a solar power system. The system comprises one or more stationary solar energy modules supported by a support structure, at least one sensor connected to at least one of the stationary solar energy modules or to the support structure for providing measurement data, and a data transfer unit (16) functionally connected to the sensor for receiving the measurement data and adapted to transmit said measurement data to data analysis unit. According to the invention, the at least one sensor is an acceleration sensor adapted to measure acceleration of said at least one stationary solar energy module or the support structure as the measurement data. The invention allows for detecting mechanical failures caused by environmental factors, for example, in stationary solar power plants at an early stage.

Abstract: Described herein are apparatuses, systems, and methods for a modular solar battery (MSB). The MSB may include a solar shell that includes a solar cell, a rechargeable battery that is charged by the solar cell, and control circuitry coupled to the solar cell and/or the rechargeable battery. The MSB may be in the form of a commercial battery. The control circuitry may include circuitry for solar power optimization, information sharing, battery charging, and/or battery health monitoring. The control circuitry may include a communication circuit to communicate information about the MSB to an external device. Other embodiments may be described and claimed.

Abstract: A method and a management server located in the cloud, for enabling adaptive power management in a gateway system, are described. The management server receives, from the gateway system powered by a rechargeable battery that is coupled with a solar power source, a location measurement indicating the location of the gateway system at a first time. The management server determines a solar profile indicating a measure of the power expected to be generated by the solar power source at the location during an interval of time that occurs after the first time. The management server transmits the solar profile to the gateway system causing the gateway system to determine based on a current battery level of the rechargeable battery and the solar profile an optimal power usage plan for the gateway system and to operate according to the optimal power usage plan during the interval of time.

Abstract: A computer implemented method for controlling a power plant system comprising a photovoltaic power source, an inverter, a DC-to-DC converter, an energy storage and an energy storage manager, the method comprising: receiving target value for AC power to be supplied by the inverter; receiving weather forecast information, energy storage status information and photovoltaic power source parameters; generating forecasted energy flow information for the photovoltaic power source based on the weather information and the photovoltaic power source parameters; comparing the forecasted energy flow information and the energy storage status information; and adjusting the target value for the AC power based on the comparison.

Abstract: Techniques and systems are described that enable multiple current source prioritization with overvoltage protection.

Abstract: A DC-DC power converter is described, and includes switched inductance circuits arranged in parallel, current sensors disposed to monitor one of the switched inductance circuits, and a controller. The DC-DC power converter supplies electric power originating from a DC power source to a high-voltage bus. Control and operation includes determining a desired control mode for operating the DC-DC power converter, wherein the desired control mode includes one of a voltage control mode and a current control mode. A desired voltage and a desired differential current for operating the DC-DC power converter are determined based upon the desired control mode. A desired current for operating the DC-DC power converter is determined based upon the desired differential current. Operation of the DC-DC power converter is controlled in the desired control mode based upon the desired voltage and the desired current.

Abstract: Computer systems and methods regarding distributed energy resource systems (DERs) re described. Configurations and employed methods may include sending a command to a DER system to place the DER system in one or more of a charge state, a discharge state, an idle state, or a reactive power state. these DER systems may include a rechargeable battery, a dc/ac converter configured to receive a DC voltage from the battery and convert the received DC voltage for receipt by an external AC circuit, and one or more controllers configured to designate operation state of the battery in at least a charge state, a discharge state, and an idle state.

Abstract: An adaptive charging system comprises at least one solar panel and a voltage regulator. The solar panel comprises a protective layer, a first EVA layer, a plurality of solar cells, a plurality of connectors, a second EVA layer and a first supporting layer. The plurality of solar cells are interconnected by the connectors, forming a main body layer. The protective layer, the first EVA layer, the main body layer, the second EVA layer and the first supporting layer are bonded together from top to bottom. The voltage regulator comprises a sampling logic power supply circuit, a microcontroller (MCU) logic circuit, a DC-DC charging circuit, a sampling current conditioning circuit, and a charging matching circuit. When the charging system charges Apple® devices, an automatic reset control logic can be implemented. The system detects the amount of light is changing based on the sampled voltage and the analog voltage signal, and monitors the detection for an additional duration of time.

Abstract: A communication apparatus comprises a first communication unit configured to receive, from an external server, an output suppression message instructing output suppression of a dispersed power source; and a second communication unit configured to perform communication of a predetermined message having a predetermined format with a power management apparatus that manages power of an equipment installed in a consumer's facility. The output suppression of the dispersed power source is performed in accordance with the output suppression message by a conversion apparatus that converts DC power output from the dispersed power source to AC power. The predetermined format includes an information element capable of storing at least one of first information and second information, the first information being related to a communication status with the conversion apparatus, the second information being related to an acquisition status of the output suppression message.

Abstract: The present disclosure relates to a hybrid power pack. The hybrid power pack includes a first storage component, a second storage component, a battery management system, a cell balancing circuit, a capacitor balancing circuit, a bidirectional switch, a unipolar transistor, an inout port, a first unidirectional switch and a second unidirectional switch. The hybrid power pack can provide sustained DC power to a load, drawing power selectively from the first storage component, the second storage component or from both storage components simultaneously.

Abstract: A portable entertainment system is created from a base unit, a handheld controller, and a remote computing device. The base unit includes a universal docking system to receive the remote computing device and a controller dock to receive the handheld controller. Several electronic systems allow for multimedia inputs and outputs to be obtained through the base unit. The base unit also acts as an access point, thanks to Ethernet and wireless capabilities. The handheld controller has several ergonomic improvements, including finger grooves along a bottom portion and elliptical shaped rests that are better adapted to the natural contours of a person's finger. Improved triggers are also provided; a reverse trigger system allows users to easily slide their fingers along a lower trigger to an adjacent upper trigger.

Abstract: A converter system for electrically driving a vehicle, including a grid-side converter, a DC link with at least a first and second potential conductors, and a motor-side converter. The motor-side converter allows a bidirectional flow of energy. The grid-side converter has a single phase on the input side and is connected to a supply grid. The grid-side converter is unidirectional and allows a flow of energy from the supply grid into the DC link. The DC link connects the grid-side converter to the motor-side converter and has a first electrical energy storage between the first and second potential conductors. The electrical energy storage is connected to the DC link via an electrical connection. The flow of energy from the DC link into the further electrical energy storage and the flow of energy from the further electrical energy storage into the DC link is able to be controlled.

Abstract: Disclosed is a wireless power transmitter for wirelessly delivering power to a receiver device, the wireless power transmitter including: a plurality of unit cells configured to radiate one or more radio frequency (RF) power transmission waves, each unit cell in the plurality of unit cells including: (i) a metal portion having an interior perimeter that surrounds an aperture defined by the metal portion; and (ii) an antenna that is aligned with the aperture in a first dimension, the antenna being configured to radiate one or more RF power transmission waves for wirelessly charging a receiver device. The one or more RF power transmission waves leak from the wireless power transmitter at least in part through the aperture when the receiver device is positioned within a threshold distance from the unit cell.

Abstract: This invention relates to a portable case including a processor configured to control the portable case; a charging port; at least one output port; an adjustable energy storage system further including a battery printed circuit board (BPCB) including a plurality of battery packs connectors; and a central battery management microprocessor (CBMM); and a plurality of battery packs configured to be connected to the plurality of battery packs connectors and to provide power to electronic appliance connected to the at least one output port; a user interface configured to enable powering and monitoring of the portable case; and a recharging element, carryable by the portable case, the recharging element configured to be connected to the charging port and recharge at least one of the plurality of battery packs.

Abstract: A wearable power management system includes: a bottom coating layer; a bottom center layer disposed above the bottom coating layer; a circuit layer disposed above the bottom center layer; a top center layer disposed above the circuit layer, and a top coating layer disposed above the top center layer. The bottom center layer and the top center layer are made of an ultra-low Young's modulus material. The Young's modulus of the bottom coating layer and the top coating layer is greater than the Young's modulus of the bottom center layer and the top center layer. The circuit layer includes a device layer and a connection layer disposed above the device layer.

Abstract: An example method includes detecting, via a wireless communication component of a near-field charging pad (pad), that a receiver is within a threshold distance of the pad. In response to the detecting, the method includes: determining whether the receiver has been placed on the pad. In accordance with determining that the receiver has been placed on the pad, the method includes: selectively transmitting, by respective antenna elements included in a plurality of antenna zones of the pad, respective test power transmission signals with a first set of transmission characteristics until a determination is made that a particular power-delivery parameter associated with transmission of a respective test power transmission signal by at least one particular antenna zone satisfies power-delivery criteria.

Abstract: According to some embodiments, a remote supervisory control system includes an electric generator configured to operate based on a driving value applied from a server, and the server configured to apply a representative driving value for an driving of the electric generator to the electric generator, receive a driving feedback signal applied from the electric generator according to the representative driving value, determine whether or not the representative driving value is normal, and update the representative driving value with a second priority driving value according to the determination result.

Abstract: The present invention is directed to utility service delivery wherein distributed intelligence and networking is used in the optimization of the service delivery. The present invention employs a network of data collection nodes and aggregation nodes located on a power grid controlled by a controlling agency. The data collection nodes comprise Intelligent Communicating Devices (ICDs) and Communicating Devices (CDs), which transmit metrics they collect over the power grid from locations near meters or service transformers to the aggregation nodes. Commands, policies, and program updates may be transmitted from a server at an aggregation node to the ICDs and CDs. The ICDs are also capable of issuing control commands to the CDs and grid management devices, acting locally and/or in conjunction with other ICDs, CDs, aggregation nodes, and central controlling agencies. Through these communications and commands, utility services delivery and utilization is optimized.

Abstract: The present disclosure relates to techniques of electronic components and, for example, to a power plug and socket. A power plug and a power socket working together with each other are provided. The power plug includes a body, at least two AC plug terminals fixed inside the body, and two DC plug terminals fixed inside the body. Each of the AC plug terminals and each of the DC plug terminals are respectively connected to separate connecting wires. The power socket includes a base. The base is provided with a base cavity. Shape of the base cavity is adapted to shape of an insert end of the body. The base cavity is provided with AC socket terminals corresponding to the AC plug terminals one by one and DC socket terminals corresponding to the DC plug terminals one by one.

Abstract: A collection, charging and distribution machine collects, charges and distributes portable electrical energy storage devices (e.g., batteries, super- or ultracapacitors). To charge, the machine employs electrical current from an external source, such as the electrical grid or an electrical service of an installation location. The machine determines a first number of devices to be rapidly charged, employing charge from a second number of devices identified to sacrifice charge. Thus, some devices may be concurrently charged via current from the electrical service and current from other devices, to achieve rapid charging of some subset of devices. The devices that sacrifice charge may later be charged. Such may ensure availability of devices for end users.

Abstract: In a solar power generation control device, a memory stores an output voltage at which maximum power is obtained, for each illuminance on a panel surface of a solar panel, acquisition circuitry acquires a vehicle speed, a present illuminance on the panel surface, and first information indicating an illuminance in a prescribed area ahead of a vehicle, and calculation circuitry calculates a predicted illuminance on the panel surface, which is an illuminance after a lapse of a prescribed length of time, based on the first information and the vehicle speed. When determining that an absolute value of a difference between first and second output voltages, at which maximum powers are obtained respectively at the present and predicted illuminances, exceeds a prescribed threshold, control circuitry makes correction such that an output voltage of the solar panel coincides with the second output voltage upon the lapse of the prescribed length of time.

Abstract: A charge controller for an electric mining vehicle is configured to determine an amount of charge to be provided to a battery of the electric mining vehicle for an upcoming trip based on regenerative braking power generation and load indication measured during a previous trip. The charge controller is further configured to command a battery charger to charge the battery up to the determined amount of charge and to stop charging the battery once the determined amount of charge has been reached.

Abstract: A near-field antenna is provided, which includes: a reflector and four distinct antenna elements, offset from the reflector, each of the four distinct antenna elements following respective meandering patterns. Two antenna elements of the four antenna elements form a first dipole antenna along a first axis, and another two antenna elements of the four antenna elements form a second dipole antenna along a second axis perpendicular to the first axis. The near-field antenna further includes: (i) a power amplifier configured to feed electromagnetic signals to one of the dipole antennas, (ii) an impedance-adjusting component configured to adjust an impedance of one of the dipole antennas, and (iii) switch circuitry coupled to the power amplifier, the impedance-adjusting component, and the dipole antennas. The switch circuitry is configured to switchably couple the first dipole antenna to the power amplifier and the second dipole antenna to the impedance-adjusting component, and vice versa.

Abstract: This invention consists of an apparatus to interface an electric vehicle battery with a solar photovoltaic system and a method of using the apparatus to provide back up power during grid outages and ancillary service revenue from the grid. The apparatus uses the solar PV inverter to provide bidirectional power flow from the battery during night-time hours, or whenever the solar array is producing insufficient power. The apparatus thus consists only of switches and control and measurement equipment. It relies on the otherwise underutilized inverter and the on-board vehicle battery charger as the power electronic components, thus minimizing cost.

Abstract: A power management method includes measuring the voltage and the current of a power source, an electrical output and a battery. The power generated by the power source, the power consumed by the electrical output and the power exchanged with the battery are calculated. The power source, the electrical output, the battery and the electrical grid are connected. Measurements of electrical generation and information on the consumption and control possibility of one or more remote systems are transmitted to a monitoring device. The electrical output is connected to the power source, the battery or the electrical grid according to information on the tariff per kWh provided by the public electricity grid, such as peak and off-peak time.

Abstract: A distributed energy resource (DER) may store electrical power from an AC circuit and discharge stored electrical power to the AC circuit. A DER may be coupled to the AC circuit via a plug inserted into a receptacle coupled to the AC circuit, and a load device may be plugged into the DER via a receptacle of the DER. The DER may pass AC power from the AC circuit to the load device, and may draw additional power from the AC circuit to charge an energy storage circuit of the DER. The DER may also discharge stored energy into the AC circuit and/or power the load device directly.

Abstract: A portable power electronic switching apparatus may include an input end high-voltage connector, a DC-DC converter circuit, an input end transfer switch, a first inverter circuit, a direct-current output end high-voltage connector, an alternating-current output end high-voltage connector, and a conversion controller, where the input end high-voltage connector may be connected to an input end of the DC-DC converter circuit, an output end of the DC-DC converter circuit may be separately connected to an input end of the first inverter circuit and the direct-current output end high-voltage connector by using the input end transfer switch. An output end of the first inverter circuit may be connected to the alternating-current output end high-voltage connector.

Abstract: An energy storage unit (ESU) is provided herein. The ESU includes a housing forming an interior volume configured to store a plurality of batteries that can collectively provide a maximum power level. The ESU includes a segmented branch interconnect system including a power transfer assembly that includes a first power interconnect system and a second power interconnect system. The second power interconnect system is configured to be coupled to a first adjacent power interconnect system of a first adjacent ESU. The power transfer assembly includes one or more conductors coupled to the first power interconnect system and the second power interconnect system, and is configured to transfer electrical power therebetween. The power transfer assembly is rated to transfer a power level that is at least three times the maximum power level provided by the plurality of batteries stored in the housing.

Abstract: An uninterruptible power supply unit is configured such that, during charging of a first battery pack, and until, after the first battery pack is charged to a fully charged state, the voltage of the first battery pack is lowered below an upper limit voltage of a load device, discharging of the first battery pack is prohibited, and discharging of the second battery pack is allowed, and such that, during charging of a second battery pack, and until, after the second battery pack is charged to a fully charged state, the voltage of the second battery pack is lowered below the upper limit voltage of the load device, discharging of the second battery pack is prohibited, and discharging of the first battery pack is allowed.

Abstract: A device and method for improving stack performance of a fuel cell system are provided. The device includes a fuel cell controller that operates a stack of a normal-pressure fuel cell system. When the fuel cell controller determines that an operating state of the stack is normal and a current intake air pressure is decreased as a result of monitoring the current intake air pressure, a current output, and an exterior air temperature of the stack, the fuel cell controller increases the amount of air to be supplied into the stack by adjusting a range of a theoretical air ratio which is a theoretical ratio of an air amount to a coolant temperature in the stack.

Abstract: A method and apparatus are disclosed for a Battery Management System (BMS) for the controlling of the charging and discharging of a plurality of battery cells (12). Each battery cell has an associated plurality of control circuits (32, 36) which monitor and control the charging of individual battery cells. These units are controlled by a central microcontroller (14) which shunts current around the battery cell if fully charged and stops discharge if a battery cell is fully discharged in order to prevent damage to the other cells.

Abstract: A wireless charging steering wheel device is described herein. The wireless charging steering wheel device is coupled to a power source via a clockspring included in the steering wheel. Also disclosed herein is an integrated wireless charging/heating system. Also disclosed herein are multiple coil placements for implementing the wireless charging steering wheel device.

Abstract: A vehicle is equipped with a power storage device configured to transmit electric power to and from a motor for driving, and a solar power generation system configured to generate electric power using sunlight and to perform solar charging that charges the power storage device with the generated electric power. The vehicle is configured to perform external charging that charges the power storage device with electric power from an external power supply apparatus. The vehicle prohibits the solar charging until a standby time has elapsed since an off operation of an ignition switch and permits the solar charging when the standby time has elapsed.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for smart electric vehicle charging and a mediator device for the same. In one aspect, a method includes receiving a signal, at a first connector, indicative of a charging capacity of a charging station, from the charging station, and providing a signal indicative of a second charging capacity at a second connector to an electrical vehicle, wherein the second charging capacity is determined based on optimization data received from an optimization service.

Abstract: An estimation method for estimating a cell's state-of-charge includes obtaining a capacitance prediction for a cell based at least in part on a preceding capacitance thereof and correcting that prediction by acquiring measurements of a physical quantity that depends on a summation of currents passing through the cell. The correction is based at least in part on a difference between the measurement of the physical quantity and a prediction for that quantity.

Abstract: The present invention relates to an energy supply circuit for instantly supplying power without a power converter and an electronic device which operates only when energy is supplied from an energy source using the same. An energy supply circuit without a power converter according to the present invention comprises: an energy extraction unit 10 for generating power from an energy source; and output unit 20 for supplying power to an external electronic circuit; a switch unit 30 interposed between the energy extraction unit and the output unit 20 to connect an output end of the energy extraction unit 10 to the output unit 20 when switched on; and a maximum power point tracking control unit 40 for generating an open/closed signal for opening or closing the switch unit 30 according to the voltage and current of the energy extraction unit 10.

Abstract: A modular quasi-resonant inverter can include: a first resonant inverter unit including a first terminal, a second terminal, a third terminal, and fourth terminal; a second resonant inverter unit including a fifth terminal, a sixth terminal, a seventh terminal, and an eighth terminal; and an input capacitor connected between the first terminal and the second terminal. The first terminal and the fifth terminal can be configured such that a first source is connected between the first terminal and the fifth terminal, and the third terminal and the fourth terminal can be configured such that a second source is connected between the third terminal and the fourth terminal. The second terminal, the fourth terminal, the sixth terminal, and the eighth terminal can be configured to be electrically connected to each other.